US 12,153,378 B2
Process and device for producing a hologram, hologram and illumination device for a vehicle
Markus Giehl, Jena (DE); Daniela Karthaus, Lippstadt (DE); and Martin Mügge, Geseke (DE)
Assigned to Hella GmbH & Co. KGaA, Lippstadt (DE)
Filed by Hella GmbH & Co. KGaA, Lippstadt (DE)
Filed on Oct. 13, 2021, as Appl. No. 17/450,766.
Application 17/450,766 is a continuation of application No. PCT/EP2020/057770, filed on Mar. 20, 2020.
Claims priority of application No. 10 2019 110 833.0 (DE), filed on Apr. 26, 2019.
Prior Publication US 2022/0035312 A1, Feb. 3, 2022
Int. Cl. G03H 1/26 (2006.01); F21S 41/20 (2018.01); G03H 1/02 (2006.01); G03H 1/20 (2006.01)
CPC G03H 1/202 (2013.01) [F21S 41/285 (2018.01); G03H 1/02 (2013.01); G03H 2270/21 (2013.01); G03H 2270/31 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A process for producing a hologram, the process comprising the following process steps:
bending a flat, photosensitive recording material by moving at least one roller or at least one sphere in at least two directions; and
projecting the hologram onto a curved recording material.